Wrench



y Sectional View.

UNITED STATESa PATENT OFFICE.

HENRY J. GILCHER, OF CLEVELAND, OHIO.

WRENCH.

SPECIFICATIOEN forming part of Letters Patent N o. 456,143, dated July 21, 1891. Application tiled September 25, 1889. Renewed J' une 18, 1891. Y Serial No. 396,665. (No model.)

To all whom it may concern.-

Be it known that l, HENRY J. GILCHER, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a new and useful Wrench, of which the following is a specification. Y

The invention relates to improvements in sliding-j aw nut-wrenches. y

he object of the present invention is to simplify, improve, and cheapen the construction of sliding-jaw nut-wrenches and enable the lost motion or wear of the operating-nut to be readily taken up.

The invention consistsin the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claim hereto appended.

In the drawings, Figure 1 is a perspective view of a wrench constructed in accordance with the invention. Fig. 2 is a longitudinal Fig. 3 is a similar view taken at right angles to Fig. 2. Fig. 4 is a detail view of the sliding jaw detached from the shank. Fig. 5 is a cross-section through the shank and the threaded extension -plates Fig. 6 is a cross-section through the handle.

Referring to the accompanying-drawings by letter,A designates the shank constructed' of suitable metal, and having at its upper end a stationary jaw B. The shank is rectangular at its upper half and has sliding upon it a jaw C, which has depending from its lower edge plates D, which are arranged upon each side ot' the shank and have their outer faces :3 curved and provided with threads, which are designed to be engaged by a nut E to operate the sliding jaw. The

lower half of the shank is slightly reduced in size and forms shoulders a, against which the nut bears, whereby it is prevented sliding upward on the shank. The lower end of the shank is threaded and is adapted to engage an internally-threaded handle F, which is hollow and has intermediate of its ends an interior annular flange f, which is provided with threads to engage the lower end of the shank, and the upper end of the hollowr handle is provided with a recess or concavity f provided about midway of the shoulder aand the threaded end a2 with a threaded portion a3, which serves to guidev the operatingnut E upon the threaded depending plates D. The nut is prevented moving upward on the shank by the shoulders a, and the handle F engages the lower side of the nut and prevents it moving downward on the shank, and when the nut is turned it engages the threaded plates D and causes them to move along the shank, whereby the sliding jaw is adjusted. Should it b e desired to tighten the nut to take up any lost motion or wear, it is only necessary to give the handle a turn and force it in contact with the lower edge of the nut.

From the foregoing description and the accompanying drawings the construction, operation, and advantages of the invention will be readily understood. v

Having thus described my invention, what I claim isln a wrench, the 'combination of the shank provided with a stationary jaw and having threaded portions a2 and a3, said shank b'eing provided 4with a shoulder a, located beyond the threads a3, the sliding jaw having integral depending threaded plates arrangedon each side of the shank, the operating-nut E, bearing against the shoulder a, and the hollow revoluble handle prvided with the interior threaded portions f to engage the shank and having at its upper end a recess or concavityf to receive the ends of the depending plates, said handle being arranged to bear against the operating-nut to take up wear, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

HENRY J. GILCHER.

Witnesses: l

VERNON H. BURKE, ABNER SLUTZ. 

